/*
    Gtalk is a videoconference application on the Android Platform.

    Copyright (C) 2009 by Frederic-Charles Barthelery,
                          Jean-Manuel Da Silva,
                          Nikita Kozlov,
                          Philippe Lago,
                          Jean Baptiste Vergely,
                          Vincent Veronis.

    This file is part of Gtalk.

    Gtalk is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Gtalk is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with Gtalk.  If not, see <http://www.gnu.org/licenses/>.

    Please send bug reports with examples or suggestions to
    contact@Gtalk-project.com or http://dev.Gtalk-project.com/

    Epitech, hereby disclaims all copyright interest in the program "Gtalk"
    written by Frederic-Charles Barthelery,
               Jean-Manuel Da Silva,
               Nikita Kozlov,
               Philippe Lago,
               Jean Baptiste Vergely,
               Vincent Veronis.

    Nicolas Sadirac, November 26, 2009
    President of Epitech.

    Flavien Astraud, November 26, 2009
    Head of the EIP Laboratory.

 */
package org.lansir.af.gtalk.smack.avatar;

import org.jivesoftware.smack.util.Base64;
import org.jivesoftware.smack.packet.PacketExtension;

/**
 * PacketExtension to represent the Avatar data. XML namespace
 * urn:xmpp:avatar:data
 * 
 */
public class AvatarExtension implements PacketExtension {

	private String mData;

	/**
	 * Create an AvatarExtension.
	 * 
	 * @param base64
	 *            the data of the avatar as a base64 string
	 */
	public AvatarExtension(final String base64) {
		mData = base64;
	}

	/**
	 * Create an AvatarExtension.
	 * 
	 * @param data
	 *            the data of the avatar
	 */
	public AvatarExtension(final byte[] data) {
		mData = Base64.encodeBytes(data);
	}

	/**
	 * Get the avatar data as a Base64 string.
	 * 
	 * @return a base64 string.
	 */
	public String getBase64() {
		return mData;
	}

	/**
	 * Get the avatar data.
	 * 
	 * @return the decoded data
	 */
	public byte[] getData() {
		return Base64.decode(mData);
	}

	@Override
	public String getElementName() {
		return "data";
	}

	@Override
	public String getNamespace() {
		return "urn:xmpp:avatar:data";
	}

	@Override
	public String toXML() {
		StringBuilder builder = new StringBuilder("<data xmlns=\"");
		builder.append(getNamespace()).append("\">");
		builder.append(mData);
		builder.append("</data>");
		return builder.toString();
	}

}
